Wiseco PK1002 66.0mm Piston Kit Honda ATC 185 200 Top End Rebuild Kit

The Wiseco PK1002 is a complete top end piston kit designed for Honda ATC 185 and ATC 200 engines, featuring a 66.0mm bore diameter (forging code 4156M). Engineered from aerospace-grade aluminum alloy, this kit delivers a superior strength-to-weight ratio that exceeds OEM standards — making it a trusted choice for both trail riders and competitive racers.

Wiseco pistons are dedicated forgings, meaning each piston is purpose-built for the specific engine application rather than adapted from a generic blank. CNC machining ensures precise dimensional tolerances for optimal fit, ring seal, and long-term durability.

Kit Includes:

• Forged piston — Aerospace aluminum alloy with optimal cam (skirt) shape and profile for peak horsepower and extended service life
• High-performance ring set — Designed for sustained power output and extended service intervals
• Alloy wrist pin — Precision-machined for consistent roundness and superior durability
• Top end needle bearing — Premium quality for reduced friction and long wear life
• Top end gasket kit — Premium materials engineered to exceed OEM sealing standards

The PK1002 is a race-proven solution chosen by top race teams across multiple motorsport disciplines. Whether rebuilding a worn engine or upgrading for performance, this complete kit provides everything needed for a reliable top end refresh on Honda ATC 185 and ATC 200 ATVs.